Elevator and spider for handling well-casings.



W. H. GARRIGAN & P. B. DAUBENSPEGK.

' ELEVATOR AND SPIDER FOR HANDLING WELL GASINGS.

APPLICATION FILED MAY 24, 1913.

Patented Apr. 21, 191i wi/twzoow P2127279 BDQuEeWs awk $11M W L 61mm,

UTED STATES PATENT OFFICE.

WILLIAM H. GARRIGAN AND PHILIP B. DAUBENSPECK, OF GOALINGA, CALIFORNIA.

ELEVATOR AND SPIDER FOB HANDLING WELL-CASINGS.

Specification of Letters Patent.

Patented Apr. 21, 1914.

Application filed May 24, 1913. Serial No. 769,601.

1 all whom it may concern Be it known that we, ILLIAM I-l. GABRI- GANand PHILIP B. Daonnnsrnon, citizens of the United States of America,residing at Goalinga, in the county of Fresno and State of California,have invented certain new and useful Improvements in Elevators andSpiders for Handling VVell-Casings, of which the following is aspecification.

This invention relates to an elevator and spider for handling wellcasings and has for its object the provision of an improved de vice ofthis character constructed to handle different sizes of well casingswith ease and quickness, and to accomplish this in a structure whichwill permit of the casing being handled without removing the tools fromthe hole, and one in which the movement of the drilling mechanism willnot be interfered with.

Further objects and advantages of the invention will. be set forth inthe detailed description which now follows.

In the accompanying drawing, Figure 1 is a view partly in side elevationand partly in section of a device constructed in accord ance with theinvention, and Fig. 2 is a plan view thereof.

Like numerals designate corresponding parts in both of the figures ofthe drawing.

Referring to the drawing, the numeral 5 designates a yoke having atapered central opening 6 formed therein for the reception of taperedbushings 7, through which the casing to be handled passes. Thesebushings are provided with overhanging flanges S which have a seatingfipon the upper face of the yoke or spider. The yoke or spider compriseslaterally extending arms 9 and 10 which pass through inner shield plates11 and outer shield plates 12. Guard plates 13 are disposed between theshield plates. Grooved sheaves 14 are journaled upon the arms 9 and 10and nuts 15 are threaded upon the reduced portions 16 of said arms,these nuts tying the whole structure together.

To hold the shield plates against turning with relation to the arms 9and 10, said arms are made angular in cross section as indicated at 17,where they pass through the inner shield plates. Shouldered tie bars 18space the shield plates apart and have nuts 19 threaded upon theiropposite ends, which structure ties the shield plates together. It willbe understood that in use, the casing line or cable (not shown) passesover these sheaves after the manner of a block and fall, and the casingitself passes through and is supported by the bushing 7 By virtue ofthis construction the necessary movement may be imparted to the casingto keep the casing from becoming frozen. This structure is a great timesaver in the performance of these functions, for the necessary movementmay be imparted to the easing without removing the tools from the hole.

It will be noted that the sheaves are of considerable size which allowsthe walking beam (not shown) to work between the easing line. Therefore,the structure does not have to be removed during the drilling proc ess.l Vhen not in actual use, the device is in position as an elevatorhanging on the lines and around the casing that is being placed inposition.

If it is desired to move the casing, all that is necessary is to stopthe engine and to transfer the power from the walking beam to the casinglines in the usual manner.

It will be noted that this device does away with the block and hook thatusually hangs above the hole and in the way of the free passage of thetools. It gives added strength and safety by doing away with many of thebreakable and dangerous parts now used.

From the foregoing description, it will be seen that simple andefficient means are herein provided for accomplishing the objects of theinvention, but while the elements shown and described are well adaptedto serve the purposes for which they are intended, it is to beunderstood that the invention is not limited to the precise constructionset forth but includes within its purview such changes as may be madewithin the scope of the appended claims.

Having described. our invention what we claim is:

1. In a device of the character described, the combination with ahorizontally disposed spider, having a bore formed verticallytherethrough and adapted to embrace a well casing, a casing engaging andsupporting means carried by said spider diametrically opposed,transversely extending arms carried by said spider, and a sheave orpulley having rotative bearing upon each of said arms.

2. In a device of the character described, the combination with ahorizontally disposed spider, having a bore formed verticallytherethrough and adapted to embrace a well and having a pair ofdiametrically opposed, casing, a casing engaging and supportingtransversely extending arms, of a casing means carried by said spiderdiametrically engaging means located in said central bore, opposed,transversely extending arms car a pair of spaced shield plates carriedby a med by said spider, and a plurality of each of said arms, and apair of sheaves rosheaves or pulleys having rotative bearing tativelymounted upon said arms between upon said arms. each pair of shieldplates.

3. In a device of the character described, 5. In a device of thecharacter described, the combination with a horizontally disposed thecombination with a. horizontally disposed 21) spider, having a centralbore formed therein spider having a central bore formed therein andcarrying a pair of diametrically opand having a pair of diametricallyopposed, posed, transversely extending arms, of a castransverselyextending arms, of a casing ening engaging means located in said centralgaging means located in said central bore, a bore, a pair of spacedshield plates carried pair of spaced shield plates carried by each m byeach of said arms and through which said of said arms, a pair of sheavesrelatively arms pass, said shield plates engaging angumounted upon saidarms between each pair lar portions of said arms to prevent the ofshield plates, and means for preventing shield plates from turning withrelation to said shield plates from bodily turning upon said arms, tiebars spacing said shield plates said arms.

39 from each other, and a pair of pulleys hav- In testimony whereof weaiiix our signaing rotative bearing upon said arms and be 'tures inpresence of two witnesses. tween said shield plates, substantially asVILLIAM H. GARRIGAN. shown and described. PHILIP B. DAUBENSIECK.

4. In a device of the character described, Vitnesses: the combinationwith a horizontally disposed J H. LANSBERRY, spider having a centralbore formed therein H. R. CROZIER.

M Copies of this patent may be obtained for five cents each, byaddressing the Commissioner of Patents, Washington, I). C.

